#455 – Adam Frank: Alien Civilizations and the Search for Extraterrestrial Life

3837.079 - 3855.343 Adam Frank

And then N sub E, the average number of planets in the habitable zone. Those are the second and third term in the Drake equation. So what that means is all the astronomical terms have been nailed. And so we said like, okay, how do we use this to do something with the Drake equation? And so we realized is, well, okay, we got to get rid of time, the lifetime thing. We can't say anything about that.